3PP anti-corrosion: Three-layer PE pipe anti-corrosion structure: the first layer epoxy powder (FBE> 100um), second layer adhesive (AD) 170 ~ 250um, third layer of polyethylene (PE) 2.5 ~ 3.7mm. Three kinds of materials, integration, and with steel to form a solid combination of good anti-corrosion layer. Diameter range Φ60 ~ Φ1420 2PP anti-corrosion: PE anti-corrosion pipe layer structure, the first layer of adhesive (AD), the second layer of polyethylene (PE), two kinds of materials, integrated with three layers of PE with the same thickness. |